<select name="month" id="month"  class="select Rmargin15" onChange="showday(this.value, document.getElementById('year').value);">
        <option value="">Month</option>
        <option value="01">January</option>
        <option value="02">February</option>
        <option value="03">March</option>
        <option value="04">April</option>
        <option value="05">May</option>
        <option value="06">June</option>
        <option value="07">July</option>
        <option value="08">Augest</option>
        <option value="09">September</option>
        <option value="10">October</option>
        <option value="11">November</option>
        <option value="12">December</option>      
</select> 